code: def test_datetime64():
      np = pytest.importorskip("numpy")
      t1 = np.datetime64(t0)
      assert str2dt(t1) == t0
  
      t1 = np.array([np.datetime64(t0), np.datetime64(t0)])
      assert (str2dt(t1) == t0).all()
  
file_path: pymap3d/src/pymap3d/tests/test_time.py
imports: from datetime import datetime
  import pymap3d.sidereal
  import pytest
  from pymap3d.timeconv import str2dt
  from pytest import approx
label_desc: Use image node_id 3 for calling a global function with example usage: test_datetime64() without return types